jQuery.fn.fancyZoom = function(options){
  
  var options   = options || {};
  var directory = options && options.directory ? options.directory : 'images';
  var zooming   = false;

  if ($('#zoom').length == 0) {
    var ext = $.browser.msie ? 'gif' : 'png';
    var html = '<div id="jquery-overlay"></div><div id="zoom" style="display:none;"> \
                  <table id="zoom_table" style="border-collapse:collapse; width:100%; height:100%;"> \
                    <tbody> \
                      <tr> \
                        <td class="tl" style="background:url(' + directory + '/tl.' + ext + ') 0 0 no-repeat; width:20px; height:20px; overflow:hidden;" /> \
                        <td class="tm" style="background:url(' + directory + '/tm.' + ext + ') 0 0 repeat-x; height:20px; overflow:hidden;" /> \
                        <td class="tr" style="background:url(' + directory + '/tr.' + ext + ') 100% 0 no-repeat; width:20px; height:20px; overflow:hidden;" /> \
                      </tr> \
                      <tr> \
                        <td class="ml" style="background:url(' + directory + '/ml.' + ext + ') 0 0 repeat-y; width:20px; overflow:hidden;" /> \
                        <td class="mm" style="background:#fff; vertical-align:top; padding:10px;"> \
                          <div id="zoom_content"> \
                          </div> \
                        </td> \
                        <td class="mr" style="background:url(' + directory + '/mr.' + ext + ') 100% 0 repeat-y;  width:20px; overflow:hidden;" /> \
                      </tr> \
                      <tr> \
                        <td class="bl" style="background:url(' + directory + '/bl.' + ext + ') 0 100% no-repeat; width:20px; height:20px; overflow:hidden;" /> \
                        <td class="bm" style="background:url(' + directory + '/bm.' + ext + ') 0 100% repeat-x; height:20px; overflow:hidden;" /> \
                        <td class="br" style="background:url(' + directory + '/br.' + ext + ') 100% 100% no-repeat; width:20px; height:20px; overflow:hidden;" /> \
                      </tr> \
                    </tbody> \
                  </table> \
                  <a href="#" title="Close" id="zoom_close" style="position:absolute; top:0; left:0;"> \
                    <img src="' + directory + '/closebox.' + ext + '" alt="Close" style="border:none; margin:0; padding:0;" /> \
                  </a> \
                </div>';
                
    $('body').append(html);
    
    $('html').click(function(e){if($(e.target).parents('#zoom:visible').length == 0) hide();});
    $(document).keyup(function(event){
        if (event.keyCode == 27 && $('#zoom:visible').length > 0) hide();
    });
    
    $('#zoom_close').click(hide);
  }
  
  var zoom          = $('#zoom');
  var zoom_table    = $('#zoom_table');
  var zoom_close    = $('#zoom_close');
  var zoom_content  = $('#zoom_content');
  var middle_row    = $('td.ml,td.mm,td.mr');
  
  this.each(function(i) {
    $($(this).attr('href')).hide();
    $(this).click(show);
  });
  
  return this;
  
  function show(e) {
	  var arrPageSizes = ___getPageSize();
	// Style overlay and show it
	$('#jquery-overlay').css({
		backgroundColor:	'#000',
		opacity:			'0.5',
		position:			'absolute',
		top:				'0px',
		width:				arrPageSizes[0],
		height:				arrPageSizes[1]
	}).fadeIn();

	$(window).resize(function() {
		// Get page sizes
		var arrPageSizes = ___getPageSize();
		// Style overlay and show it
		$('#jquery-overlay').css({
			width:		arrPageSizes[0],
			height:		arrPageSizes[1]
		});
		// Calculate top and left offset for the jquery-lightbox div object and show it
		$('#zoom').css({
			top:	(arrPageSizes[1] / 2) - 200,
			left:	(arrPageSizes[0] / 2) - 340
		});
	});


    if (zooming) return false;
		zooming         = true;
		var content_div = $($(this).attr('href'));
  	var zoom_width  = options.width;
		var zoom_height = options.height;
		
		var width       = window.innerWidth || (window.document.documentElement.clientWidth || window.document.body.clientWidth);
  	var height      = window.innerHeight || (window.document.documentElement.clientHeight || window.document.body.clientHeight);
  	var x           = window.pageXOffset || (window.document.documentElement.scrollLeft || window.document.body.scrollLeft);
  	var y           = window.pageYOffset || (window.document.documentElement.scrollTop || window.document.body.scrollTop);
  	var window_size = {'width':width, 'height':height, 'x':x, 'y':y}
	
		var width              = (zoom_width || content_div.width()) + 60;
		var height             = (zoom_height || content_div.height()) + 60;
		var d                  = window_size;
		
		// ensure that newTop is at least 0 so it doesn't hide close button
		var newTop             = Math.max((d.height/2) - (height/2) + y, 0);
		var newLeft            = (d.width/2) - (width/2);
		var curTop             = e.pageY;
		var curLeft            = e.pageX;
		
		zoom_close.attr('curTop', curTop);
		zoom_close.attr('curLeft', curLeft);
		zoom_close.attr('scaleImg', options.scaleImg ? 'true' : 'false');
		
    $('#zoom').hide().css({
			position	: 'absolute',
			top				: curTop + 'px',
			left			: curLeft + 'px',
			width     : '1px',
			height    : '1px'
		});
    
    fixBackgroundsForIE();
    zoom_close.hide();
    
    if (options.closeOnClick) {
      $('#zoom').click(hide);
    }
    
		if (options.scaleImg) {
  		zoom_content.html(content_div.html());
  		$('#zoom_content img').css('width', '100%');
		} else {
		  zoom_content.html('');
		}
    
    $('#zoom').animate({
      top     : newTop + 'px',
      left    : newLeft + 'px',
      opacity : "show",
      width   : width,
      height  : height
    }, 500, null, function() {
      if (options.scaleImg != true) {
    		zoom_content.html(content_div.html());
  		}
			unfixBackgroundsForIE();
			zoom_close.show();
			zooming = false;
    })
    return false;
  }
  
  function hide() {
	$('#jquery-overlay').fadeOut();
    if (zooming) return false;
		zooming         = true;
	  $('#zoom').unbind('click');
		fixBackgroundsForIE();
		if (zoom_close.attr('scaleImg') != 'true') {
  		zoom_content.html('');
		}
		zoom_close.hide();
		$('#zoom').animate({
      top     : zoom_close.attr('curTop') + 'px',
      left    : zoom_close.attr('curLeft') + 'px',
      opacity : "hide",
      width   : '1px',
      height  : '1px'
    }, 500, null, function() {
      if (zoom_close.attr('scaleImg') == 'true') {
    		zoom_content.html('');
  		}
      unfixBackgroundsForIE();
			zooming = false;
    });
    return false;
  }
  
  function switchBackgroundImagesTo(to) {
    $('#zoom_table td').each(function(i) {
      var bg = $(this).css('background-image').replace(/\.(png|gif|none)\"\)$/, '.' + to + '")');
      $(this).css('background-image', bg);
    });
    var close_img = zoom_close.children('img');
    var new_img = close_img.attr('src').replace(/\.(png|gif|none)$/, '.' + to);
    close_img.attr('src', new_img);
  }
  
  function fixBackgroundsForIE() {
    if ($.browser.msie && parseFloat($.browser.version) >= 7) {
      switchBackgroundImagesTo('gif'); 
    }
	}
  
  function unfixBackgroundsForIE() {
    if ($.browser.msie && $.browser.version >= 7) {
      switchBackgroundImagesTo('png'); 
    }
	}

	function ___getPageSize() {
		var xScroll, yScroll;
		if (window.innerHeight && window.scrollMaxY) {	
			xScroll = window.innerWidth + window.scrollMaxX;
			yScroll = window.innerHeight + window.scrollMaxY;
		} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
			xScroll = document.body.scrollWidth;
			yScroll = document.body.scrollHeight;
		} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
			xScroll = document.body.offsetWidth;
			yScroll = document.body.offsetHeight;
		}
		var windowWidth, windowHeight;
		if (self.innerHeight) {	// all except Explorer
			if(document.documentElement.clientWidth){
				windowWidth = document.documentElement.clientWidth; 
			} else {
				windowWidth = self.innerWidth;
			}
			windowHeight = self.innerHeight;
		} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
			windowWidth = document.documentElement.clientWidth;
			windowHeight = document.documentElement.clientHeight;
		} else if (document.body) { // other Explorers
			windowWidth = document.body.clientWidth;
			windowHeight = document.body.clientHeight;
		}	
		// for small pages with total height less then height of the viewport
		if(yScroll < windowHeight){
			pageHeight = windowHeight;
		} else { 
			pageHeight = yScroll;
		}
		// for small pages with total width less then width of the viewport
		if(xScroll < windowWidth){	
			pageWidth = xScroll;		
		} else {
			pageWidth = windowWidth;
		}
		arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight);
		return arrayPageSize;
	};


		
}